80 lines
1.9 KiB
C++
80 lines
1.9 KiB
C++
#include "BaseCloudLayerRenderer.h"
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#include "clouds/BaseCloudsModel.h"
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#include "Vector3.h"
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BaseCloudLayerRenderer::BaseCloudLayerRenderer(SoftwareRenderer* parent):
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parent(parent)
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{
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}
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BaseCloudLayerRenderer::~BaseCloudLayerRenderer()
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{
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}
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Color BaseCloudLayerRenderer::getColor(BaseCloudsModel *, const Vector3 &, const Vector3 &)
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{
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return COLOR_TRANSPARENT;
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}
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bool BaseCloudLayerRenderer::alterLight(BaseCloudsModel *, LightComponent *, const Vector3 &, const Vector3 &)
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{
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return false;
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}
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bool BaseCloudLayerRenderer::optimizeSearchLimits(BaseCloudsModel *model, Vector3 *start, Vector3 *end)
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{
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Vector3 diff;
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double min_altitude, max_altitude;
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model->getAltitudeRange(&min_altitude, &max_altitude);
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if (start->y > max_altitude)
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{
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if (end->y >= max_altitude)
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{
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return false;
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}
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else
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{
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diff = end->sub(*start);
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*start = start->add(diff.scale((max_altitude - start->y) / diff.y));
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if (end->y < min_altitude)
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{
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*end = end->add(diff.scale((min_altitude - end->y) / diff.y));
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}
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}
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}
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else if (start->y < min_altitude)
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{
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if (end->y <= min_altitude)
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{
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return false;
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}
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else
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{
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diff = end->sub(*start);
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*start = start->add(diff.scale((min_altitude - start->y) / diff.y));
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if (end->y >= max_altitude)
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{
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*end = end->add(diff.scale((max_altitude - end->y) / diff.y));
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}
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}
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}
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else /* start is inside layer */
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{
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diff = end->sub(*start);
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if (end->y > max_altitude)
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{
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*end = start->add(diff.scale((max_altitude - start->y) / diff.y));
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}
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else if (end->y < min_altitude)
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{
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*end = start->add(diff.scale((min_altitude - start->y) / diff.y));
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}
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}
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return true;
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}
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